Edit the code in VT6

Hi,

First of all I am sorry that I am asking about a VT behaivor here, but I hope someone can answer my silly question.
I recorded some scenarios with the scenario recorder , and now I wan to edit the code but evrytime I use <Enter> it
acts like a down arrow key. And it overwrites my text if I just simply click at the beginning of the line and start typing.
Can someone please help me.It drives me crazy.
Thank you!